Results 21 to 30 of about 1,774,464 (332)

Discovery of Water Vapor in the High-redshift Quasar APM 08279+5255 at z = 3.91 [PDF]

open access: yes, 2011
We report a detection of the excited 2_(20)-2_(11) rotational transition of para-H_2O in APM 08279+5255 using the IRAM Plateau de Bure Interferometer. At z = 3.91, this is the highest-redshift detection of interstellar water to date.
Gerin, M.   +4 more
core   +3 more sources

Improvement of strength and water absorption of Interlocking Compressed Earth Bricks (ICEB) with addition of Ureolytic Bacteria (UB) [PDF]

open access: yes, 2018
Interlocking Compressed Earth Brick (ICEB) are cement stabilized soil bricks that allow for dry stacked construction. This characteristic resulted to faster the process of building walls and requires less skilled labour as the bricks are laid dry and ...
J.M., Irwan   +3 more
core   +1 more source

An investigation of the hydration properties of chemically vapour-deposited silicon dioxide films by means of ellipsometry [PDF]

open access: yes, 1977
Time-dependent ellipsometric measurements were made of the water absoprtion in SiO2 films grown by chemical vapour deposition at low temperatures. These films were exposed to water vapour at different pressurures.
Rooij, N.F. de   +2 more
core   +2 more sources

Measurement of Water Absorption of Recycled Aggregate

open access: yesMaterials, 2022
Owing to the high absorption capacity of recycled aggregate (RA), it is crucial to accurately measure its saturated-surface-dried water absorption (WSSD), which largely affects an effective water-to-binder ratio of recycled aggregate concrete. In this study, existing measurement methods for the WSSD of RA are extensively reviewed, including Wiping ...
Zhenhua Duan   +4 more
openaire   +2 more sources

Hydrogen contamination in Ge-doped SiO[sub 2] thin films prepared by helicon activated reactive evaporation [PDF]

open access: yes, 2015
Germanium-doped silicon oxidethin films were deposited at low temperature by using an improved helicon plasma assisted reactive evaporation technique.
Boswell, R.   +5 more
core   +1 more source

Absorption of Inhaled Radioactive Water Vapour [PDF]

open access: yesNature, 1961
THE local function of different regions of the lungs can be studied by the inhalation of various gases labelled with oxygen-15. Recently, water vapour has been labelled in this way. Oxygen-15 has a half-life of 2 min. and is produced by a continuous flow process by bombarding nitrogen with deuterons in the Medical Research Council cyclotron in the ...
J B, WEST, C T, DOLLERY
openaire   +2 more sources

Strength and water absorption rate of concrete made from palm oil fuel ash [PDF]

open access: yes, 2017
Concrete is one of the most important materials for construction industry. The material in the mixture of concrete includes cement, sand and coarse aggregate.
Manap, Norpadzlihatun   +2 more
core   +1 more source

Study on micromechanism of water absorption and its softening effect on shale rock in deep coal measures

open access: yes矿业科学学报, 2019
Water absorption experiments under different water pressures were carried out on a series of shale samples collected from Shenyang of Liaoning province using a self-developed hydrophilic experimental system.At the same time,X-ray diffraction,high ...
Zhang Na   +4 more
doaj   +1 more source

Study on water absorption and pore structure fractal characteristics of slag-based geopolymer

open access: yes矿业科学学报, 2021
To explore slag-based geopolymer porous material under the condition of different porosity, pore diameter distribution of performance and improve the mechanism of water absorption, the experiments on the water absorption, water release properties of the ...
Chen Zhen   +4 more
doaj   +1 more source

Water absorption and drying shrinkage of recycled foamed aggregate concrete [PDF]

open access: yes, 2018
This paper presents some experimental results and discusses the used of recycled foamed aggregates as natural coarse aggregates replacement in producing concrete. The physical properties of recycled foamed aggregates concrete were investigated.
Chai, Teck Jung   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy